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New details emerge on Inifiniti QX50’s unique new variable-compression engine

Infiniti will release the world's first production variable-compression engine when it releases the 2019 QX50 midsize SUV sometime next year. Now we have some new details on the innovative new engine, which Infiniti is calling VC-T, for Variable Compression Turbo, after the luxury brand offered a prototype test drive. We wrote extensively about the complicated technology underpinning the new engine last year. It's the latest novel development that could represent a range-extender, if you will, for the embattled internal combustion engine in an era when automakers and governments are shifting their focus to electric vehicles. The VC-T is a new inline-four, 2.0-liter that combines the power of a high-performance turbo gasoline engine with the torque and efficiency of an advanced diesel engine, but without the latter's notorious emissions. It features the ability to seamlessly raise or lower the stroke of the pistons in the combustion chamber, depending on the driving conditions it detects and inputs from the driver, to select the best compression ratio—anywhere between 8:1, typical for high-performance engines, and 14:1 for high efficiency. In essence, it delivers the performance of a V6 but is much more efficient, with improved fuel efficiency of between 10 to 15 percent with its best competitors, per Car and Driver. You can view how it works in motion via the video below. This content is hosted by a third party. To view it, please update your privacy preferences. Manage Settings. It's also quieter, more lightweight and compact than V6 engines with comparable power outputs, estimated at 268 horsepower and 288 pound-feet of torque. In a prototype test drive, Car and Driver writes that the engine "felt very conventional" and responsive, with strong and smooth acceleration. "The only indication you have that the compression ratio is changing is from an indicator in the instrument cluster next to the boost gauge." The engine is expected to deliver fuel economy gains of 27 percent in combined city-highway EPA rating over the outgoing QX50, which had a 3.7-liter V6. The 2019 model, fitted with the VC-T, should get about 26 mpg in combined fuel economy, and it will get to 60 mph almost one second faster than its four-cylinder counterparts, Nissan's chief powertrain engineer, Shinichi Kiga, told Automotive News. The VC-T engine is the result of 20 years of development spanning more than 100 prototypes and around 300 patents at Nissan.

Infiniti SUV recall marks latest chapter in Takata airbag saga

Automotive parts maker Takata is having a rough year with millions of vehicles equipped with its airbag inflators being recalled. However, it looks like there might still be problems with the company's quality control, if a new recall by Infiniti is any indication.
The Japanese luxury brand is recalling 1,912 total units of the 2013 Infiniti QX56 and 2014 QX80 in North America because of a manufacturing flaw with their Takata-supplied inflators for the driver's side front airbag. Of those, 1,848 are in the United States, according to the National Highway Traffic Safety Administration. Specifically, the outer baffle could be the wrong component and cause too much pressure to build up inside. According to documents submitted to NHTSA, it's possible in a crash for the part to rupture spraying metal shrapnel at occupants. At this time, Infiniti has not had any reports of this actually happening to drivers.
While this problem sounds nearly identical to the issue affecting millions of earlier vehicles, it must be noted that this is a different fault. According to the notice being sent to dealers on NHTSA's website: "This particular Voluntary Safety Recall Campaign is unrelated to two earlier campaigns that involved Takata passenger front air bag inflators on some older model Infiniti vehicles. This issue involves a much newer inflator and is a different, more isolated, Takata quality control issue."

Infiniti QX55 crossover coupe teased again, hints at FX looks and a surprise out back

Infiniti plans to launch five new vehicles in the next three years. We got an abstract squiggle of the first one in August, when Infitini teased the coming QX55 crossover coupe during Monterey Car Week. Said to act as a medium that would communicate design language from the dearly departed FX crossover, the QX55 is meant to infuse a lot more design mojo to the conventional QX50 crossover that it's based on. The Japanese luxury brand just dropped the second teaser, this one revealing a swath of greenhouse and shoulder, and indeed, an arc of chrome trim that could have been traced from FX production drawings. The attention-getter here is what comes behind the greenhouse: A tailgate extension with the makings of a stubby trunk.  Positive reviews have come from a group of media to whom Infiniti showed a matte gray pre-production version of the QX55. The front diverges from the QX50 only in a few details, while the roofline isn't as coupe-ish as it might be because designers wanted to ensure adequate headroom for rear seat passengers. The steep rake has been saved for the area aft of the C-pillar, convincing one scribe to write that "the QX55 reminds us most of the Audi Q8, which also lacks swooping silhouette and looks more like a lifted hatchback." The rear fascia is said to look "cleaner and more modern than Infiniti’s current midsize crossovers," even though the jutting rear presents a vertically flat lower hatch that looks "a bit boxy." Having moved the license plate holder to the bumper, the wide expanse is home to a larger Infiniti badge and logo script with an "I" that serves an as-yet-undisclosed function. At the edges come taillights with a "sharp new piano key design." One site summed up with, "this is a gorgeous crossover coupe that will turn heads." The QX50 is expected to debut in the first three months of 2020, with an on-sale date sometime next summer.